hphp/util/exception.cpp

   1 /*
   2    +----------------------------------------------------------------------+
   3    | HipHop for PHP                                                       |
   4    +----------------------------------------------------------------------+
   5    | Copyright (c) 2010-present Facebook, Inc. (http://www.facebook.com)  |
   6    +----------------------------------------------------------------------+
   7    | This source file is subject to version 3.01 of the PHP license,      |
   8    | that is bundled with this package in the file LICENSE, and is        |
   9    | available through the world-wide-web at the following url:           |
  10    | http://www.php.net/license/3_01.txt                                  |
  11    | If you did not receive a copy of the PHP license and are unable to   |
  12    | obtain it through the world-wide-web, please send a note to          |
  13    | license@php.net so we can mail you a copy immediately.               |
  14    +----------------------------------------------------------------------+
  15 */
  16
  17 #include "hphp/util/exception.h"
  18
  19 #include "hphp/util/string-vsnprintf.h"
  20
  21 namespace HPHP {
  22 ///////////////////////////////////////////////////////////////////////////////
  23
  24 Exception::Exception(const char *fmt, ...) {
  25   va_list ap; va_start(ap, fmt); format(fmt, ap); va_end(ap);
  26 }
  27
  28 Exception::Exception(const std::string& msg)
  29   : m_msg(msg) {
  30 }
  31
  32 Exception::Exception(const Exception& e)
  33   : m_msg(e.m_msg), m_what(e.m_what)
  34 {}
  35
  36 void Exception::format(const char *fmt, va_list ap) {
  37   string_vsnprintf(m_msg, fmt, ap);
  38 }
  39
  40 ///////////////////////////////////////////////////////////////////////////////
  41
  42 const char* Exception::what() const noexcept {
  43   if (m_what.empty()) {
  44     m_what = m_msg + "\n";
  45   }
  46   return m_what.c_str();
  47 }
  48
  49 ///////////////////////////////////////////////////////////////////////////////
  50 }